Comments on: Modded TI-83 Calculator

By: Stewart Munro

Stewart Munro — Wed, 01 Dec 2010 20:24:07 +0000

Oh my these are fantastic lads! I am trying to make my casio go faster have you any tips for this old maths teacher?

By: zero-cool

zero-cool — Thu, 20 Aug 2009 03:58:58 +0000

I’m trying to learn how to modify my TI 84, any tips? Thanks for the help.

By: alex

alex — Wed, 21 Feb 2007 00:47:17 +0000

im definitely gonna look into hacking the included usb cable circuitry to try and accomodate input. I have a USB to PS/2 Converter laying around that i think i can take apart and use the USB part of to integrate into the calculator.

By: digitelle

digitelle — Tue, 13 Feb 2007 18:42:39 +0000

In somewhat of a response to 14, I think the USB port should replace the PS/2. You could then use a USB hub or docking station and the possibilities become semi-endless, keyboard and mouse at the same time!

Not sure that a secondary monitor for a TI-83 would be useful though....

~Digi

By: Ben Ryves

Ben Ryves — Mon, 12 Feb 2007 17:27:12 +0000

Good work, Kerm. ;)
The PS/2 routines are available (in beta) from my website, http://benryves.com/bin/emerson/

By: Collin Cerbus

Collin Cerbus — Mon, 12 Feb 2007 16:38:30 +0000

In addition to your calculator, you should add a usb interface. And you should also add an overlocking button.

By: Christopher Mitchell

Christopher Mitchell — Mon, 12 Feb 2007 07:17:36 +0000

It does indeed, in my construction blog. Just click the link and choose “The Construction Blog”. Feel free to post on the site if you need more details on any of it, and I’ll probably be posting a tutorial soon.

By: Alan Rager

Alan Rager — Mon, 12 Feb 2007 06:15:11 +0000

Does the site say how he did any of it?

By: kikkoman

kikkoman — Mon, 12 Feb 2007 03:53:32 +0000

a few years ago used to tinker with the ti82. as we mostly played phoenix or other shell based stuff during school, overclocking was more than useless. EL backlight and memory expander were pretty cool, though.

that ps/2 port thing is really handy. any old notebook trackpad should work, too (and won't require long annoying cables..)
great work!

By: Christopher Mitchell

Christopher Mitchell — Mon, 12 Feb 2007 03:27:13 +0000

I don't recall ever running across the second-processor thing, but I'm working on a shell in assembly that was a GUI API, peer-based networking, built-in PS/2 support (of course), and functional multithreading. You can check it out at http://dcs.cemetech.net

By: y0mama

y0mama — Sun, 11 Feb 2007 21:23:04 +0000

I use to do assembly language stuff on the ti89 z80 based unit. I wrote a tutorial once on how to interface with serial circuits through the I/O port.

I also did some work on operating system for it.

TI Calculator hacking has been going on for over a decade. I remember years back someone made a mod that added another processor, and implemented parallel tasking in assembly.

By: Abbie Gonzalez

Abbie Gonzalez — Sun, 11 Feb 2007 14:59:33 +0000

That is awesome. A remember my ti 83, and trying to add an internal speaker to it. I used it for class notes, and the principal thought it was cool.
fun times.

By: Aud1073cH

Aud1073cH — Sun, 11 Feb 2007 12:20:07 +0000

Stop laughing, math is cool now.

So now someone's just got to do some OC'ing, etc. of a Voyage 200 PLT or a TI-89 Titanium.
http://www.ticalc.org/basics/calculators/

I'm sorry, is this a tangent?

By: Christopher Mitchell

Christopher Mitchell — Sun, 11 Feb 2007 08:55:38 +0000

Sweet! Thanks for the tips, everyone. I tried filling in the PS/2 port area with hot glue, but that worked out less than well. By the way, the direct link is:
http://www.cemetech.net/news.php?290

By: Jakeh

Jakeh — Sun, 11 Feb 2007 07:59:22 +0000

This isn't bad for a beginner, in fact i like the concept a lot! Just silly enough :)

However, a few bits of advice if i may.

1) Spray paint is your friend, Airbrushing would be even better, but don't underestimate the humble rattle-can.

2) Streamline that ps/2 port! My favorite method is to use 5min JB Weld as a filler/adhesive. Just block up the bigger gaps with electrical tape, and spear some JB all over the joint--and i mean really goop it on. Once it's totally hardened (24hrs), you can sand it down into a nice smooth shape that slows seamlessly into the calc's body. When you paint it all, it can look quite professional!